2024-03-28T17:53:21Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/49492022-05-20T13:23:32Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845
Repositorio Institucional de la Universidad de Burgos
author
Ibáñez Martínez, David
author
Izquierdo Bote, Daniel
author
Fernández Blanco, Ana Cristina
author
Heras Vidaurre, Aránzazu
author
Colina Santamaría, Álvaro
2018-09-12T11:41:49Z
2019-04-01T02:45:07Z
2018-03
http://hdl.handle.net/10259/4949
Chemical and physical properties of metal nanoparticles (NPs) are determined not only by the synthesis method used to prepare them but also by the experimental conditions under the generation process takes place. One of the most important factors in the synthesis of NPs is the presence of complexing agents in the media that can change the size and shape of the NPs. The significant role of different complexing agents (cyanide, ethylenediaminetetraacetic acid, and ethylenediamine) in the electrochemical formation of silver nanoparticles (AgNPs) has been analyzed by time-resolved Raman spectroelectrochemistry. Electrochemical and spectroscopic responses, obtained simultaneously, provide suitable information about the changes that occur on the platinum electrode surface during the AgNPs electrodeposition. The morphology of AgNPs has been analyzed by ultraviolet–visible absorption spectroelectrochemistry, providing additional information and a detailed view of the electrodeposition process. The influence of the complexing agent used to generate AgNPs has been studied analyzing the surface-enhanced Raman scattering (SERS) effect of the modified substrate. Raman spectra show different SERS behavior depending on the complexing agent and therefore on the AgNPs generated. The relationship between SERS signals and the morphology of AgNPs has been displayed by scanning electron microscopy images. Time-resolved Raman spectroelectrochemistry confirms that chemical mechanism is necessary for SERS effect.
eng
complexing agents
Raman spectroelectrochemistry
SERS
silver nanoparticles
UV–vis absorptionspectroelectrochemistry
Electrodeposition of silver nanoparticles in the presence of different complexing agents by time‐resolved Raman spectroelectrochemistry
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/4949/1/Iba%c3%b1ez-jrs_2018.pdf
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https://riubu.ubu.es/bitstream/10259/4949/3/JRamanSpectrosc2018_AgNPs-ComplexAgents.pdf.txt
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JRamanSpectrosc2018_AgNPs-ComplexAgents.pdf.txt